package org.scrm.controller;

import com.alibaba.fastjson.JSON;
import lombok.extern.slf4j.Slf4j;
import org.scrm.fegin.ProductService;
import org.scrm.model.Order;
import org.scrm.model.Product;
import org.scrm.service.OrderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.util.List;
import java.util.Random;

@RestController
@Slf4j
public class OrderController {

    @Autowired
    private RestTemplate restTemplate;
    @Autowired
    private OrderService orderService;
    @Autowired
    private ProductService productService;
    @Autowired
    private DiscoveryClient discoveryClient;


    //准备买1件商品
    @GetMapping("/order/prod/{pid}")
    public Order order(@PathVariable("pid") Integer pid) {
         log.info(">>客户下单，这时候要调用商品微服务查询商品信息");
         //通过restTemplate调用商品微服务
         Product product = restTemplate.getForObject( "http://localhost:8081/product/" + pid, Product.class);
         log.info(">>商品信息,查询结果:" + JSON.toJSONString(product));
         Order order = new Order();
         order.setUid(1);
         order.setUsername("测试用户");
         order.setPid(product.getPid());
         order.setPname(product.getPname());
         order.setPprice(product.getPprice());
         order.setNumber(1);
         orderService.save(order);
         return order;
     }

    //准备买1件商品
     @GetMapping("/order1/prod/{pid}")
     public Order order1(@PathVariable("pid") Integer pid) {
         log.info(">>客户下单，这时候要调用商品微服务查询商品信息");
         //从nacos中获取服务地址
         ServiceInstance serviceInstance = discoveryClient.getInstances("service-product").get(0);
         String url = serviceInstance.getHost() + ":" + serviceInstance.getPort();
         log.info(">>从nacos中获取到的微服务地址为:" + url);
         //通过restTemplate调用商品微服务
         Product product = restTemplate.getForObject("http://" + url + "/product/" + pid, Product.class);
         log.info(">>商品信息,查询结果:" + JSON.toJSONString(product));
         Order order = new Order();
         order.setUid(1);
         order.setUsername("测试用户");
         order.setPid(product.getPid());
         order.setUsername("测试用户");
         order.setPid(product.getPid());
         order.setPname(product.getPname());
         order.setPprice(product.getPprice());
         order.setNumber(1);
         orderService.save(order);
         return order;
     }

     //准备买1件商品
     @GetMapping("/order3/prod/{pid}")
     public Order order3(@PathVariable("pid") Integer pid) {
        log.info(">>客户下单，这时候要调用商品微服务查询商品信息");
        //从nacos中获取服务地址 //自定义规则实现随机挑选服务
        List<ServiceInstance> instances = discoveryClient.getInstances("service-product");
        int index = new Random().nextInt(instances.size());
        ServiceInstance serviceInstance = instances.get(index);
        String url = serviceInstance.getHost() + ":" + serviceInstance.getPort();
        log.info(">>从nacos中获取到的微服务地址为:" + url);
        //通过restTemplate调用商品微服务
        Product product = restTemplate.getForObject("http://" + url + "/product/" + pid, Product.class);
        log.info(">>商品信息，查询结果:" + JSON.toJSONString(product));
        Order order = new Order();
        order.setUid(1); order.setUsername("测试用户");
        order.setPid(product.getPid());
        order.setPname(product.getPname());
        order.setPprice(product.getPprice());
        order.setNumber(1);
        orderService.save(order);
        return order;
    }


    //准备买1件商品
    @GetMapping("/order4/prod/{pid}")
    public Order order4(@PathVariable("pid") Integer pid) {
        log.info(">>客户下单，这时候要调用商品微服务查询商品信息");
        //直接使用微服务名字，
        // 从nacos中获取服务地址
        String url = "service-product";
        //通过restTemplate调用商品微服务
        Product product = restTemplate.getForObject( "http://" + url + "/product/" + pid, Product.class);
        log.info(">>商品信息，查询结果:" + JSON.toJSONString(product));
        Order order = new Order();
        order.setUid(1);
        order.setUsername("测试用户");
        order.setPid(product.getPid());
        order.setPname(product.getPname());
        order.setPprice(product.getPprice());
        order.setNumber(1);
        orderService.save(order);
        return order;
    }

    //准备买1件商品
    @GetMapping("/order5/prod/{pid}")
    public Order order5(@PathVariable("pid") Integer pid) {
        log.info(">>客户下单,这时候要调用商品微服务查询商品信息");
        //通过fegin调用商品微服务
        Product product = productService.findByPid(pid);
        log.info(">>商品信息,查询结果:" + JSON.toJSONString(product));
        Order order = new Order(); order.setUid(1);
        order.setUsername("测试用户"); order.setPid(product.getPid());
        order.setPname(product.getPname());
        order.setPprice(product.getPprice());
        order.setNumber(1);
        orderService.save(order);
        return order;
    }

}
